1. Vaccination: Vaccination is a method of making the body immune to a particular disease by injecting killed or weakened disease causing microbe into a body to stimulate the formation of antibodies and develop immunity to that disease causing microbe.
2. Immunisation: Immunisation is body’s natural defence mechanism which acts by producing antibodies against the antigens infecting the body.
3. Immunity: The ability of an organism to resist and overcome infection is called immunity.
4. Vaccine: A vaccine is a biological preparation of a weakened or killed pathogen (disease causing microbes) which stimulates the formation of antibodies and develops immunity against a particular disease.
5. Pathogen: Any organism that is capable of causing disease is called a pathogen. Examples : bacteria, virus or other microorganism.
6. Atherosclerosis: Atherosclerosis is a disease caused by the malfimtioning of heart wherein the arterial walls get hardened and thickened, reducing the flow of blood and raising the blood pressure.
